An experimental study of the half-wave dipole antenna immersed in a stratified conducting medium

Abstract

Measurements are described of the driving-point admittance and the amplitude and phase distributions of the current for a half-wave dipole antenna immersed in a stratified medium for various gradients <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">S</tex> of the ratio <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">\sigma/\omega\epsilon_{r}-\epsilon_{0} = b+sx</tex> , where the origin of the coordinates is at the driving point of the dipole antenna and the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</tex> axis is along the antenna. The study includes a description of the apparatus, a discussion of the effect of the nylon films separating the layers, and an interpretation of the data. Reference is made to the possible application of a half-wave dipole antenna to the detection of an inhomogeneity in a medium.